Shower curtain



FIG. 1 is a rear perspective view of a shower curtain showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a left side thereof, shown in a used condition in a shower with a bathtub in broken lines.

The broken lines shown in the drawing view forms no part of the claimed design. 

CLAIM The ornamental design for a shower curtain, as shown and described. 